List of IP Addresses of CloudFront Edge Server Locations

Answer - C.

Amazon Web Services (AWS) publishes its current IP address ranges in JSON format.

To view the current ranges, download ip-ranges.json.

For more information on location of Edge servers , please refer to the below link:

The correct answer for this question is C. Download the ip-ranges.json file available from AWS.

CloudFront is a content delivery network (CDN) service provided by Amazon Web Services (AWS) that allows users to distribute their content globally with low latency, high transfer speeds, and high availability. CloudFront operates through a network of edge servers distributed globally.

To obtain a list of IP addresses of the edge server locations for CloudFront, you can download the ip-ranges.json file from AWS. The ip-ranges.json file contains a list of AWS IP address ranges, including the IP address ranges for CloudFront edge locations. The ip-ranges.json file is updated regularly by AWS, so it always contains the most current information.

To download the ip-ranges.json file, you can use the following steps:

1. Go to the AWS IP address ranges page (https://docs.aws.amazon.com/general/latest/gr/aws-ip-ranges.html).
2. Click on the "Download" link to download the ip-ranges.json file.
3. Open the ip-ranges.json file and search for the CloudFront IP address ranges.
4. You can then use these IP address ranges to configure your security groups, firewalls, or other network devices to allow traffic from CloudFront edge locations.

Option A, checking the CloudFront Console, may not provide a comprehensive list of all the IP addresses for CloudFront edge locations. Option B, using the CloudFront API to query the IP addresses, may require additional programming skills and may not provide a comprehensive list of all the IP addresses. Option D, contacting AWS, may not be necessary since the ip-ranges.json file is available for download and is regularly updated.